package com.wfm.niuke;

import com.wfm.common.TreeNode;

public class MinDeepTree {
    public int minDepth(TreeNode root){
        if (root==null) return 0;
        if(root.left==null&&root.right==null) return 1;
        if(root.left==null){
            return minDepth(root.right)+1;
        }else if(root.right==null){
            return minDepth(root.left)+1;
        }else {
            return Math.min(minDepth(root.left),minDepth(root.right));
        }
    }
}
